Disk mill



(No Model.) 2 Sheets-Sheet H. `85 G. ROSE. DISK MILL.

155.585,535; Patented June 29,1897( i l y I,v

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(No Model.) 2 Sheets-Sheet 2. H. 8u G. ROSE.

, DISK MILL.

No.` 585,536. Patented June 29, 1897.

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`HENRI ROSE AND GEORGES ROSE, OF POISSY, FRANCE.

DISK MILL.

SPECIFICATION forming part `of Letters Patent No. 585,536, dated June 29, 1897.

Application filed June 1l, 189B. Serial No. 595.199. (No model.) Patented in France September 20, 1887, No. 185,959.

T0 all whom t may concern:

Be it known that we, HENRI ROSE and GEORGES ROSE, manufacturers, citizens of the Republic of France, residing at Poissy, Seine-etOise, France, have invented certain new and useful Improvements in Disk Mills, (for which we have been granted a French patent,dated September20,18S7,No.185,959,) of which the following is a specification.

Our invention relates more particularly to disk mills for crushing and grinding corn and other grain, in which the operation of crushing and grinding is effected by means of two disks arranged vertically, one of which is fixed or stationary, while the other has a rotary movement, and between which disks the grain to be treated is caused to pass. In order that mills of this kind shall Work under good conditions, it is essential that the surfaces of these two disks shall be always parallel one to the other, and for this purpose we have invented a very simple and efficient arrangement by means of which there is effected, primarily, an exact parallelism of the said two surfaces, and, secondarily, their adjustment toward or away from each other, according to the requirements of the grinding process.

In order to enable our said improvements to be well understood, we shall now proceed to describe the same with reference to the three figures of the accompanying drawings, of which- Figure l is a side elevation of a disk mill constructed according to our invention with a portion shown in section. Fig. 1fL is a detail in plan showing the arrangement of the spring-abutment hereinafter described. Fig. 2 is a front elevation of the said mill.

Referring to the drawings, a is the fixed framing of the mill. l

b is the rotary dislnfixed on a plate b,keyed on a shaft c. This shaft c is carried in a rotary manner in the bearings d CZ', and motion is imparted to-it by means of a strap passing over a pulley e, which is keyed on the said shaft c.

f is the fixed disk, mounted in the plate g of the mill.

We may employ any usual or suitable construction of the foregoing parts, although we should prefer to employ the disks as described and illustrated in an application for a patent filed by us on the 11th day of June, 189C, Serial No. 595,200.

It is to the foregoing component parts of a disk mill that we have applied our invention for effecting and maintaining or controlling the parallelism of the disks, as also the distance apart of the same, and for this purpose we cast on the fixed casing a three lugs h Zt Zi, and upon the adjustable disk-carrier g three corresponding lugs dit', which are situated opposite to the said lugs Z1J h h. These six lugs are each pierced with a smooth hole for the passage of the three spindles j j j, which are screw-threaded externally throughout their length and are securely held in their respective lugs dit by means of nuts Ze. On each spindle jjj" there screws a small toothed chain-wheel ZZ Z, of which the hub is necessarily screw-threaded in its bore, and each spindle is provided at its center part with a nut fm, which serves to compress a helical spring n against the inner face of the corresponding lug h. The result of this arrange ment is that the rotation of the wheels Z Z Z" on the iXed screw-threaded spindles 7' j j in one direction causes the plate g, with its disk f, to move inward-that is to say, closer to the rotary disk b, in opposition to the tendency of the springs n-while the rotation of the said wheels in the opposite direction enables the fixed disk f to move farther away from the rotary disk l) under the action of the helical springs n.

Parallelism of the fixed disk f with the rotary disk Z) is eifected by means of the nuts Zt, which are tightened up or slackened by cans ing them to turn in one or the other direction, according to circumstances, until the disk f bears uniformly upon the whole surface of the rotary disk ZJ. Then the pressure is also rendered uniform at the three points of contact by compressing the springs n more or less by means of the nuts m. When this first adjustment has been once made, it is merely necessary inorder to adjust the distance between the two disks to move the Xed disk f away from the rotary disk Z2, according to requirements. For this purpose we `arrange around the three chain-wheels Z Z Zl an endless chain o, which imparts the desired rotary motion to them simultaneously. As before stated, this rotary motion has for result t0 move the fixed disk f nearer to or farther away from the rotary disk b, while maintaining the previously-produced parallelism between these plates, since the Wheels Z Z Z being positively connected together by the chain o turn simultaneously through equal amounts and move,- therefore, simultaneously through equal distances in one or the other direction along the screw-threaded spindles j j j", which have the same pitch of screw-threads. Motion is imparted to the chain 0 by means of a hand-wheel. p, keyed 011 one end of a small shaft q, which extends axially through and rotates freely in one of the three screwthreaded spindles, (in the drawings it is the spindle j,) which is made tubular for this purpose, While the other two spindles may be solid. On the other end of the shaft q is rigidly iixed one (Z) of the chain-wheels, kept in place by a nut r, as is clearly shown in the sectioned portion of Fig. l.

In order to insure a proper distribution of the grain or other material to be crushed over the whole of the circumference of the disks Z) and f, fillets or blades b, varying in number, according to the diameter of the disks, are arranged from the center to the circumference. The grain enters at g' 4at the center of the fixed plate g of the mill, so that uniform y distribution is insured thereby. Finally, in order to avoid any breakage of parts in consequence of the accidental entrance between the disks of hard substances other than the materials to be crushed, 4we have provided an abutment or stop c', in which the'end of the shaft c bears and which is connected to the g bearing d by means of screw-threaded spindles d2, fixed in the lugs of the said bearing,and

passing through holes formed in the lugs cz'of E the head c.

Springs d3, capable of being adjusted by means of nuts c3, allow the abutlar or shoulder c2, which acts as a counter stop or abutment.

I claiml. In a disk mill, the combination with a stationary disk and a movable disk arranged to rotate opposite the station ary disk, of means for supporting Ithe disks, and rotating the movable disk, screw-threaded spindles securely held at-one end in the stationary disk-carrier and loosely passing through lugs on the frame of the 1n ill, one of said spindles being tubular, chain wheels tapped over the ends of the spindles in rear of said lugs, an endless chain passing about the said chain-wheels for simultaneously imparting to the disks a rotary motion,a shaft journaled in the said tubular spindle and having keyed on one end thereof the chain-Wheel actin gon the said tubular spindle, a hand-wheel fixed on the other end of the said 3 shaft for moving the chain to simultaneously rotate all the chain-wheels, and springs interposed between the said lugs and nuts arranged on vthe spindle, substantially asdescribed and for the purpose specified.

2. In a disk mill, the combination with the stationary disk, the movable disk arranged to rotate opposite the stationary disk, and means for supporting said disks, and rotating the movabledisk, of a device for maintaining and regulating the parallelism of the disks and their distance apart, an abutment-head upon which bears the end of the shaft carrying the fi movable disk, screw-threaded spindles fixed to the bearing in which the said shaft is fitf ted and loosely passing through lugs on the abutment-head, springs surrounding the said 4threaded spindles, and

regulating nuts screwed'upon'the said spindles for regulating the tension of said springs, substantially as described and for the purpose specied.

In testimony whereof we have hereunto set j, our han ds in presence-of two subscribing witnesses.

ment c to yield to the passage of a hard body and to then return the shaft c back into its normal position, which is limited by the col- HENRI ROSE.

' GEORGES ROSE.

Attest:

' OLYDE SHRoPsHIRn, D. H. BRANDON. 

